Arch Linux

lightstream

Member

From: Britain

Registered: 2011-10-30

Posts: 69

[SOLVED] Something is establishing a DHCP connection when cable is in

I use netctl with a static IP profile for wifi and wired as the cable isn't always plugged in.

Strangely, when I start up the PC with a network cable plugged in, something makes a DHCP connection and I can't work out what.

$ ip addr | grep 192
    inet 192.168.50.51/24 brd 192.168.50.255 scope global eth0
    inet 192.168.50.82/24 brd 192.168.50.255 scope global secondary eth0
    inet 192.168.50.51/24 brd 192.168.50.255 scope global wlan0

This is with both wifi & wireless profiles enabled (and the netctl DHCP profile *not* enabled)

I suspect whatever is creating the 'secondary eth0' connection shown above is something other than netctl.

Anyone got any pointers where to look?

Last edited by lightstream (2015-04-26 22:11:26)

Head_on_a_Stick

Member

From: The Wirral

Registered: 2014-02-20

Posts: 8,795

Website

Re: [SOLVED] Something is establishing a DHCP connection when cable is in

It could be systemd-networkd:
https://bbs.archlinux.org/viewtopic.php … 0#p1523110

Check the output of:

systemctl status systemd-networkd

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Jin, Jîyan, Azadî

graysky

Wiki Maintainer

From: :wq

Registered: 2008-12-01

Posts: 10,697

Website

Re: [SOLVED] Something is establishing a DHCP connection when cable is in

Or dhcpcd, see what's enabled via:

find /etc/systemd/system -mindepth 1 -type d | xargs ls -l --color

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lightstream

Member

From: Britain

Registered: 2011-10-30

Posts: 69

Re: [SOLVED] Something is establishing a DHCP connection when cable is in

Thanks both.

Looks like it was dhcpcd.